Set the numeric type (real or complex) of an output port
CSignal_T ssSetOutputPortComplexSignal(SimStruct *S, input_T port, CSignal_T csig)
SSimStruct representing an S-Function block.
portIndex of an output port.
csigNumeric type of the signals emitted by port. Valid
values are COMPLEX_NO (real signal),
COMPLEX_YES (complex signal), and
COMPLEX_INHERITED (dynamically
determined).
1 (COMPLEX_YES), 0
(COMPLEX_NO), or -1
(COMPLEX_INHERITED) depending on the value specified by
csig.
Use this function in mdlInitializeSizes to initialize an output
port numeric type. If the numeric type of the output port is determined dynamically,
e.g., by a parameter setting, set the numeric type to
COMPLEX_INHERITED. In this case, the S-function must provide
mdlSetOutputPortComplexSignal and
mdlSetDefaultPortComplexSignals
methods to enable the numeric type to be set correctly during signal propagation.
The default numeric type of an output port is real.
C, C++
Assume that an S-function has three output ports. The first output port emits real (noncomplex) signals. The second output port emits a complex signal. The third port emits signals of a type determined by a parameter setting. The following example specifies the correct numeric type for each port.
ssSetOutputPortComplexSignal(S, 0, COMPLEX_NO) ssSetOutputPortComplexSignal(S, 1, COMPLEX_YES) ssSetOutputPortComplexSignal(S, 2, COMPLEX_INHERITED)
See the S-function sfun_cplx.c used in sfcndemo_cplx and the S-function sdotproduct.c used in sfcndemo_sdotproduct for complete examples that use this
function.